Third to william cummins and samuel mckat



W. L. -DISMUKES- ROLLER BEARING. y

Patented May -11, 1897.

(No-Model.)

afl-51g:

FFICE,

UNITED STATES ATENT VILLIAM LOUIS DISMUKES, OF NASHVILLE, TENNESSEE,ASSIGNOR OF ONE- THIRD TO WILLIAM OUMMINS AND SAMUEL MCKAY, OF SAMEPLACE.

ROLLER-BEARING.

SPECIFICATION forming part of Letters Patent No. 582,521, dated May 1 1,1897. Application filed March 3, 1897. Serial No. 625,853. (No rmniel.)k

To all whom t may concern: with the axle B and with the interior of theBe it known that I, WILLIAM LOUIS DIS- hub. rihe balls D are similarlyconfined IMUKES, a citizen of the United States,'resid against the endsof the rolls by means of an ing at Nashville, Davidson county,Tennesinneradjusting-nutE, having screw-threaded 5 see, have inventedcertain new and useful engagement with the interior of the hub A,

Improvements in Roller-Bearings, of which and an outer adj Listing-nutF, having asimithe following is'a specification. lar screw-th readedengagementwith said hub. My invention relates to roller-bearings, andBoth of said nuts have their inner faces more particularly to suchbearings applied to smooth and iiat and are' adjusted to contact 6o Iocarriages and Wagons, and my object is to with the balls D, so as topress said balls provide a roller-bearing for such vehicles equally intotheir seats c on the ends of the which shall be simple and durable andcaparolls. c ble of being economically manufactured and The inner nut Ehas a projecting serrated in which the number of parts is reduced toflange e, by which the nut is turned for ad- 15 a minimum whileretaining all of the essenjustment, and the said nut is recessed, astial advantages to be derived by the use of shown at d, on its outerface, so that the bearings of the character defined. flange e willproject over and embrace the Vith this object in view my inventionconflange b on the axle. v sists in the novel construction of parts andThe outer end of the axle, as before indio zo the details thereof, ashereinafter described, cated, is screw threaded, to which screwand moreparticularly pointed out in the threaded portion is iitted a locking-nutII, claims, With reference to the accompanying which nut prevents theWheel from slipping drawings, in whichoff the axle and should be soadjusted as not Figure l is a central vertical section on line to haveany appreciable frictional contact 75 25 l 1, Fig. 2, of my improvedbearing, partly with the'adjusting-nutF as the latter rotates inelevation. Fig. 2 is a transverse vertical with the hub. section on theline 2 2, Fig. 1. Eig. 3 is an h The outer end of the hub is providedwith end elevation with dust-cap and nuts rea dust-cap G, which isscrew-threaded to fit moved. Fig. 4 is a similar view to Fig. l of acorresponding screw-threaded portion on 8o 3o a slightly-modiiied form.the outer end of the hub and rotates there- Referring to the drawings,in which the with. y same reference-characters relate to the same Bymaking the recesses in the end of the parts in all the views, A is thehub of the friction-rolls of a spherical shape to conform wheel,internally screw-threaded at the ends, to the spherical contour of theballs D, I find 3 5 which hub is provided with any of the ordithat theballs are subjected toan even presnary means for attaching the spokes,perfosure on their contacting-surfaces, and I thererated flanges a beingshown, for example, to by not only lessen the Wear to the lowest de-Which flanges steel spokes may be secured in gree, but I am able by theuse of the flat-faced the customary manner, forming a wheel foradjusting wear-nuts E and E in conjunction 9o 4o a light vehicle.therewith to support the friction rolls and The axle B is provided witha projecting balls Within the bore of the hub Without the angeb at theinner end and is screw-threaded use of any additional tie-rods commonlyemat its outer end and passes centrally through ployed in roller cagesor bearings of the kind the cylindrical bore of the hub Ain which towhich my invention relates, and conse- 4 5` it is supported equally onall sides by means quently a wheel provided with the roller-bearofantifriction-rolls C, on each end of which ing hub embodying myinvention can be rerolls are formed spherically-shaped recesses movedfrom. the axle and replaced without c, in which are seatedantifriction-balls D. disturbing in the least either the balls or theThe rolls C are closely confined within the rolls, as the latter aresupported within said xoo 5o hub, the adjacent rolls being in contactwith hub by an even pressure on all sides.

each other, and every roll being in contact It will be understood, ofcourse, that in assembling the parts with the hub in a vertical positionthe inner wear-nut E is screwed in place, leaving a small space betweenthe end of the hub and the projecting flange for further adjustmentafter the Wheel has been put on the axle, in case of wear, and the ballsD are placed in position upon the iiat inner face of said nut, theirouter surfaces being in contact with the interior of the hub. The rollsC are then slipped into place, their peripheries being held in closecontact with the bore of the hub and in close contact with each other.The outer set of balls D are then placed in position, one ball beingseated in each recess on the outer end of each friction-roll, andfinally the outer wear-nut F is screwed into place until its flat facecontacts with the balls, thereby confining the rolls and balls betweenthe two sets of wear-nuts with a pressure suficient only to hold them inplace. The parts being thus assembled, the wheel can be held in anyposition without disturbing the balls or rolls and can be readilyslipped Onto the axle which supports the wheel, through contact with theballs and rolls the axle-flange b limiting the movement of the hubinwardly and the lock-nut H on the outer end of the axle limiting themovement outwardly. The dust-cap may then be screwed into place, asshown in Fig. l.

Then it becomes necessary to adjust the bearing on account of any wear,the inner adjusting-nut E can be quickly and readily screwed fartherinto the hub by means of the serrated flange ewthout removing the wheelfrom the axle, and ordinarily this adjustment will be found to besuiiicient, but if it is desired also to adjust the outer nut F it isonly necessary to remove the dust-cap to give access to the serratedflange f of said nut.4

Instead of making the rolls and hub cylindrical these may be madeconical, as shown in Fig. 4, where the hub A has a conical bore and therolls C taper outwardly, in which case the outer balls D will be smallerin diameter than the inner balls, the other parts being the same, asalready described.

I claim as my inventionl. In a roller-bearing, a hub for a wheel, havinginternallyscrewthreaded ends, in combination with an axle passingcentrally therethrough, antifriction rolls arranged around said axle incontact therewith, with each other and with the inner surface of thehub, the said rolls being provided with spherically-shaped recesses intheir ends, a series of balls seated in the recesses in the outer endsof the rolls and adjustable fiat-faced wear-nuts engaging thescrew-threads in said hub and confining the rolls and balls betweenthem, substantially as described.

2. In a roller-bearing, the combination with the hub of a wheel, of anaxle passing centrally therethrough, provided with an inner iiange forlimiting the inward movement of the wheel or hub, and screw-threaded atits outer end, `a series of antifriction-rolls arranged around the axlein contact therewith, with each other and with the bore of the hub, saidrolls being provided with sphcricallyshaped recesses in their ends andwear-nuts having flat inner faces adjustably secured to the hub, andconfining said. balls to the recesses in the ends of the rolls, theinner nut being provided with an outwardly-projecting flange recessed toiit the flange on the axle, balls seated in the recesses in the outerends of the rolls, and an outer wear-nut adjustably mounted in the boreof the hub provided with a fiange and a lock-nut on the screw-threadedend of said axle, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

VILLIAM LOUIS DISMUKES.

lVitnesses:

J. S. l\1[cFADDEN,

IV. D. MOORE.

